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View Full Version : Finally an alltrac dyno



donteatbugs
05-11-2010, 01:21 AM
311 hp
285 ft lbs
20 psi


engine:
ross 8.5:1 pistons .20 over
eagle rods
gsc 268 cams
engle valve springs
8000 rpm limit
cometic hg with arp studs
block and deck shaved flat

rmr intake manifold
q45 tb
koracing gt3076r turbo kit .63 a/r exhaust housing
3" exhaust
open dump
blitz dsbc
hydra nemesis 2.5
speed source rail and regulator
supra tt fuel pump
880cc injectors
30x12x3 fmic with 3" piping

http://i73.photobucket.com/albums/i220/donteatbugs/th_MVI_0664.jpg (http://s73.photobucket.com/albums/i220/donteatbugs/?action=view&current=MVI_0664.mp4)

http://i73.photobucket.com/albums/i220/donteatbugs/CIMG0048.jpg

The Captain
05-11-2010, 01:23 AM
Weaksauce

Luni
05-11-2010, 01:26 AM
It is weaksauce.

Tune yo shit bugs!

Waffles!
05-11-2010, 01:33 AM
Shit boy! Tune the car!

METDeath
05-11-2010, 01:33 AM
/yourself

donteatbugs
05-11-2010, 03:42 AM
it is pretty weak for what i have done. i can tell it needs more timing in boost.

Shadowlife25
05-11-2010, 03:59 AM
Can't you alter that with the Hydra unit?

Seems to me you should be able to pull about 50hp more at the boost level you're running on that turbo Bugs.

celica9303
05-11-2010, 04:08 AM
tune your shit ! sounded good though, but have to agree you should be at around the 360hp range I would think.

you got pm too

ChrisD
05-11-2010, 04:36 PM
it is pretty weak for what i have done. i can tell it needs more timing in boost.

Yep, for sure. Torque dropping pretty significantly once the RPM's get up there (where the 3076 should be best, especially on an engine that will flow well...). What does the timing map look like? Also, did you degree your cams w/ a degree wheel?

But yeah, you should be able to prevent the torque from dropping like a stone like that. I'd bet either cam degreeing or more ign advance required.

Luni
05-11-2010, 05:49 PM
Thats exactly what weve concluded Chris. Needs to tune the cams and the ignition table better. I drove the car today tho. Holy shit that thing moves.

MidnightBlueGT4
05-11-2010, 07:58 PM
+1 on tuning

v8killer
05-11-2010, 09:45 PM
call this your baseline lol

UtahSleeper
05-11-2010, 10:45 PM
These are definately not the responses I would expect people to be saying about a dyno over 300 lol.

METDeath
05-12-2010, 01:27 AM
These are definately not the responses I would expect people to be saying about a dyno over 300 lol.

We're not knocking him for having 300+, we're simply informing him that his mods should put him above the numbers he put down.

Nitro_Alltrac
05-12-2010, 03:49 AM
With that turbo and the boost level alone he should be well above the 300 level.

donteatbugs
05-12-2010, 03:53 AM
i was just wondering what i was making, this give me a place to start with my ignition tuning. i think im almost at the limit of only street tuning. i think the rest will need to be on a dyno. i love the way the car drives right now and its very conservative tune for safety.

Shadowlife25
05-12-2010, 04:01 AM
Do you have a J&S Ultra Safeguard unit yet Bugs?

At the levels you're looking at, I would highly recommend one.

Luni
05-12-2010, 04:15 AM
Ill agree Bugs. The dyno numbers dont say alot, but holy fuck your car is fun to drive. Its fucking fast too. It definately ges up and moves.

Did I mention its fun as fuck to drive? Cause it is.

Bugs car is badass. It doesnt get the street cred it deserves. Id roll that fucker anyday in a heartbeat.

Too bad he wouldnt let me drive it with ALL the boosta. I only got 14 psi.

ChrisD
05-12-2010, 04:28 AM
Definitely looks like you've got a solid base to work from. I'd agree on the street tuning. It is pretty tricky, especially the timing side of things. Especially, especially, when you see an experienced tuner do in a matter of minutes what takes you hours.

Did you degree those cams tho? That's one thing you can do without a dyno...but you'll need to readjust the fuel for sure after. I got my degree kit for $100 at summit.

3076 is one of the turbos on my "short" list...very interested in your progress bugs!

joe's gt
05-12-2010, 07:29 AM
Ill agree Bugs. The dyno numbers dont say alot, but holy fuck your car is fun to drive. Its fucking fast too. It definately ges up and moves.

Did I mention its fun as fuck to drive? Cause it is.

Bugs car is badass. It doesnt get the street cred it deserves. Id roll that fucker anyday in a heartbeat.

Too bad he wouldnt let me drive it with ALL the boosta. I only got 14 psi.

Which means that he did a great job on tuning cruise to boost transition. Congrats Bugs, now its time to utilize the full potential of your setup!

donteatbugs
05-12-2010, 12:51 PM
tune is decent seeing as i get 17 mpg in boost/around town and 24 on the highway.

i was getting an average of 2.5v at the knock sensor and a peak of 3.6v. i dont know exactly what to aim for but my threshold when i got it from rickyb was set at 4 basicly

Mafix
05-13-2010, 03:13 PM
my threshold is much higher than that bugs. the damn hydra is very touchy on the knock sensor.

very nice dyno BTW. 310 at every wheel is great! yes it can be better (can't we all get more tuning time in!) but from what i see it looks great! pump gas too IIRC, right? what was the temperature outside?

donteatbugs
05-13-2010, 03:17 PM
temp was good, around 70 i think but it was raining outside. mafix if you dont mind emailing me a map and data log from your nemesis. something high boost and 3rd gear. id like to look at your knock and timing. my email is donteatben@gmail.com rickyb recommends zipping the files so it doesnt get corrupted in the transfer.

cms-gt4
05-13-2010, 08:01 PM
Those numbers are nothing to sneeze at. What dyno did you end up going to?

donteatbugs
05-13-2010, 11:09 PM
batlground performance in atlanta

Mafix
05-14-2010, 07:32 PM
is there an area i can help you out in? our timing maps won't be the same and i do not have logs from the nemesis. i used the dyno while monitering the hydra live feed.
these motors seem to pick up engine noise (knock) between 4000 and 5000 rpm. depending on boost, fuel, ect. i actually had to change my knock threshold much higher on mine becuase it's too damn sensitive.

oh and my pulls were in 4th gear. not 3rd (also accounts for my lower numbers)

The Sage
05-16-2010, 08:47 PM
(bugs)

id like to just have a look at your maps if you dont mind, just wanna have something to compare it to.

Luni
09-29-2010, 08:54 PM
Bugs, posted your dyno over on mr2oc and ats scott thinks your ignition is breaking up on the top side, and also that your cams arent degreed properly and youre getting way more power loss on the top side than you should be.

donteatbugs
09-29-2010, 09:50 PM
he said my timing looked weak, not breaking up silly!

Cavanagh
09-30-2010, 01:35 AM
Wish the video still was there, n00b! :D

Luni
09-30-2010, 01:58 AM
Bugs, your ignition does appear to be weak/breaking up in the high side.

And I wouldnt be surprised if your cams werent right, I already told you to get your cams tuned.

But youre prolly not gonna.

donteatbugs
09-30-2010, 04:39 AM
i need an awd dyno to do that fucker!

---------- Post added at 10:38 PM ---------- Previous post was at 10:34 PM ----------

fixed video link, i think my dead battery may have been affecting my ignition voltage. notice the battery charger on it

---------- Post added at 10:39 PM ---------- Previous post was at 10:38 PM ----------

i think ill try the hks 264 specs on the cam settings. they are a pain to set in the car on an alltrac though.

Mafix
09-30-2010, 03:24 PM
bugs i totally forgot you buddy! sorry. i'll email my most recent map to you. please don't run your car on it (not that you would) and remember my fuel tables will be way off from yours.

donteatbugs
09-30-2010, 04:05 PM
im not gonna upload it, just look at it. btw my email is donteatben@gmail.com

ChrisD
09-30-2010, 05:11 PM
You should get a degree wheel and degree them properly. That would get you in the most probable sweet spot. Since the degree settings will change with a number of factors it is almost impossible to say one spec will work best on any given engine.

donteatbugs
09-30-2010, 07:13 PM
well you have to have a baseline to use a degree wheel propperly and sometimes that isnt even optimuim settings. the best way to set them is on a dyno.

ChrisD
09-30-2010, 07:56 PM
Degreeing with a wheel will get you to true "straight up", which is generally a pretty good starting point and is probably pretty good for most people. From there, you could make small changes on a dyno to shift the curves. Without it, you'd have no way of knowing where straight up is.

Just seems like you're giving up a tonne in the top end the way the torque is dropping off.

I'll be doing mine sometime soon as I've just installed my 256's, I'll probably take some pics and do a write up of doing it while engine is in the car.

donteatbugs
09-30-2010, 09:38 PM
that would be nice. ive read several write ups on it but have yet you do it successfully. i did find that my crank pully is true tdc though. that helps with using other peoples staring point on the degrees. i couldnt find a good place to mount a dial indicator on the top of the cam.

donteatbugs
10-07-2010, 01:28 AM
ok, my cams were at +3.5 intake -6 exhaust. ats recommends hks 264 cams to be set at +4 intake -8 exhaust. Ats also did the 268 in a gen 3 head and came up with +3 intake -8 exhaust. so i set my ehaust to -8 and left my intake at 3.5 since its a bitch to loosen in the car.

Mafix
10-07-2010, 03:53 PM
GDDDamnit i forgot again. call me later tonight, i'll pm you my number.

donteatbugs
10-08-2010, 11:51 AM
So i went to nemesis timing school last night with mafix. I was way off on my timing maps, maybe ill be ok now that i have more reasonable values in there and understand what they mean.

Kanoodle
10-08-2010, 02:08 PM
I walked in on that, that's why I stayed quiet in chat after I said Hi to my lover... His name is Ben :)

donteatbugs
10-08-2010, 04:21 PM
yeah, sorry about that. i needed his info since he knew a lot more about it than me and this is the first time ive ever been able to chat with him about it live.

Mafix
10-09-2010, 07:40 PM
and a couple of hours on the phone and it should be all good now. let me know how that works out bugs!

donteatbugs
10-12-2010, 12:25 PM
So i put the timing map i made on the phone into the nemesis last night and it started and drove around the block. Only a little boost. This morning i drove the car to work, 60* outside car runs great at 13 psi and pulls all the way to redline. It feels kinda slow but this is a pretty base map type thing. I turn the boost up to 22 psi (i guess) and it boosts fine in 4th and 5th gear but when i do a pull in 3rd i get instant misses. I dont know if this is because of the timing change or what. AFRs are 11-12 in boost at both boost settings. Im guessing the spark may be getting blown out. Ill turn the boost down to 20 or 18 and try again. I am running 1 step colder NGK platinum plugs but i cant remember the gap i had.

stigt4
03-03-2011, 06:47 AM
nice numbers. i haven't dyno'd my st165 yet but i'm hoping for at least 250whp.